i've done it
made my own array
$_allsubcategories = func_get_categories_list($current_category['parentid'], true, "level");
$smarty->assign("allsubcategories", $_allsubcategories['subcategories']);
in categories.php
+
{foreach from=$allsubcategories item=subcat}
<a href="home.php?cat={ $subcat.categoryid }" class="subcategoryList">{ $subcat.category|escape }</a>
{/foreach}
in subcategories.tpl